Quest GeoSystems Management (Quest) is an environmental and engineering geology firm that provides professional consulting services for the investigation, remediation and management of environmental concerns. We are headquartered in Oakley, California and have serviced sites throughout the western United States since 1996. Our core services are environmental site assessment, soil and groundwater investigation and remediation, environmental monitoring, regulatory negotiation, construction management for remediation projects, risk management and turn-key project management.